[libvirt-users] question about using openAuth with Python

Hi guys Is anybody can help me how to use openAuth to connect a remote URI without input the boring password? we assume the password of root for remote machine is "123456". Even I running the example in libvirt library esxlist.py(change uri to a qemu type and assign the username and password). Bellow is my simple test code, unfortunately it still need me to input the password. import libvirt def authcb(ncred, cbdata): for cred in ncred: if cred[0] == libvirt.VIR_CRED_AUTHNAME: cred[4] = "root" elif cred == libvirt.VIR_CRED_PASSPHRASE: cred[4] = "123456" return 0 class connection: def __init__(self, uri): self.uri = uri def open(self): auth = [[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_PASSPHRASE], authcb, None] vm_conn = libvirt.openAuth(self.uri, auth, 0); print self.uri if vm_conn == None: print 'Failed to open connection to %s' % self.uri for name in vm_conn.listDefinedDomains(): print name vm = vm_conn.lookupByName(name) if __name__ == '__main__': conn = connection('qemu+ssh://root@192.168.1.203/system') conn.open() Thanks fan